Bland AI vs Retell AI vs Synthflow AI vs Vapi
A side-by-side look at scores, pricing and features — with RECATOOLS' ASEAN-aware verdict for each.
Bland AI
Real-time voice agents that sound human
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Retell AI
Voice AI for phone-call automation
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Synthflow AI
No-code voice AI agents for enterprise phone support at scale.
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Vapi
Voice AI infrastructure for developers
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| RECATOOLS Score | 6.6 / 10 | 7.2 / 10 | 7.8 / 10 | 7.3 / 10 |
| Capability | ||||
| Value for money | ||||
| Ease of use | ||||
| ASEAN readiness | ||||
| API quality | ||||
| Pricing | Paid | Paid | Freemium | Paid |
| Free tier | — | — | Free trial available; Starter plan from $29/mo (50 min) for legacy users | — |
| Paid from | — | — | Pay-as-you-go from ~$0.11–$0.24/min; Pro from ~$375–$450/mo | — |
| Has API | ✓ | ✓ | ✓ | ✓ |
| Open source | ✗ | ✗ | ✗ | ✗ |
| Free to use | ✗ | ✗ | ✓ | ✗ |
| Users | — | — | Used across many enterprise deployments; tens of millions of calls handled | — |
| Founded | 2023 | 2023 | 2023 | 2023 |
| Maker | — | — | AgentFlow AI GmbH | — |
| Verdict | Bland AI is an API-first platform for building AI voice agents that make and take phone calls for sales, support and operations, with low-latency conversation, custom workflows and number provisioning. For teams automati... |
Retell AI is a developer-first platform for building production AI voice agents that handle real phone calls, with low-latency conversation, interruption handling, telephony (Twilio/SIP) integration and post-call analyti... |
Synthflow's no-code flow designer and native CRM/CCaaS integrations remain the strongest pitch for teams that need production voice agents without engineers, and G2 backs that up: 4.5/5 across roughly 950 reviews, with a... |
Vapi is a developer-focused platform for building real-time voice AI agents, orchestrating speech-to-text, an LLM and text-to-speech into low-latency phone and web calls. Its appeal is flexibility: you bring your own mod... |
| Full review → | Full review → | Full review → | Full review → |
Comparisons cover up to 4 tools. Scores are RECATOOLS editorial assessments; verify current pricing on each vendor's site.